drafting.CLASS_DEFAULTS: one removable entry per set, read from the signals the confidence already reads (a CUDA card whose engine slots are under the last-but-one CONF_STEPS step).
IQ3_S: on P2003 the file cache makes the MTP faster than DFlash2 by 12-44% (RTX2 t4b). UD-IQ4_XS-v31: DFlash2 beats the MTP by about 6.5% (t8, 3 starts; DF-VAL forced-fast tuned 0.8 x1.037).
The v31 entry DEPENDS ON RTX2's FILE-TIER FIX (unbuffered reads) BEING IN THE SAME RELEASE; without it remove that entry.
Anything chosen by name wins. Resident CUDA, Strix, gfx1201, Arc and Metal entries and the conf tables are unchanged. The sm_86 support line reads the set: UD-IQ4_XS-v31 gets the existing
'faster on some kinds of text and slower on others' line, every other model keeps 'slower'.
(cherry picked from commit 42412d42ff835d6a66a78fbf6d119911908eda1b)